pated  weighted  average  life  at  the  time  of purchase. Consequently, an investor in non- sticky jump securities should carefully con- sider the likelihood and probable frequency of  the  occurrence  of  the  trigger  event  in analyzing  the  anticipated  weighted  average life of the securities acquired. The rate of principal payments on the un- derlying certificates will directly affect the rate of principal payments on the group 2,
3, 4 and 10 securities. The underlying cer- tificates  will be sensitive in varying degrees to •  the rate of payments of principal (includ- ing prepayments) of the related mortgage loans, and •  the priorities for the distribution of princi- pal among the classes of the related under- lying series. As described in the related underlying certifi- cate  disclosure  documents,  the  underlying certificates  included in trust asset groups 2, 3, 4 and 10 are not entitled to distributions of principal until certain classes of the related underlying series have been retired and, ac- cordingly,  distributions  of  principal  of  the related mortgage loans for extended periods may be applied to the distribution of princi- pal  of  those  classes  of  certificates  having priority over the underlying certificates. Ac- cordingly, the underlying certificates may re- ceive no principal distributions for extended periods of time or may receive principal pay- ments that vary widely from period to period. In addition, the principal entitlement of the underlying certificates included in trust asset groups 3, 4 and 10  on any payment date is calculated on the basis of schedules; no as- surance  can  be  given  that  the  underlying certificates  will  adhere  to  their  schedules. Further,  prepayments  on  the  related  mort- gage loans may have occurred at rates faster or slower than those initially assumed. This supplement contains no information as to  whether  the  underlying  certificates  have adhered to their principal balance schedules, whether  any  related  supporting  classes  re- main outstanding or whether the underlying certificates otherwise have performed as orig- inally anticipated. Additional information as to  the  underlying  certificates  may  be  ob- tained by performing an analysis of current principal  factors  of  the  underlying  certifi- cates in light of applicable information con- tained  in  the  related  underlying  certificate disclosure documents. The securities may not be a suitable invest- ment for you. The securities, especially the group 2, 3, 4 and 10 securities and, in partic- ular,  the   support,   interest  only,   principal only,  inverse floating rate,  non-sticky jump, accrual and residual classes, are not suitable investments for all investors. In addition, although the sponsor intends to make a market for the purchase and sale of the  securities  after  their  initial  issuance,  it has no obligation to do so. There is no assur- ance that a secondary market will develop, that any secondary market will continue, or that the price at which you can sell an invest- ment in any class will enable you to realize a desired yield on that investment. You will bear the market risks of your invest- ment. The market values of the classes are likely to fluctuate. These fluctuations may be significant  and  could  result  in  significant losses to you. The secondary markets for mortgage-related securities  have  experienced  periods  of  illi- quidity and can be expected to do so in the future. Illiquidity can have a severely adverse effect on the prices of classes that are espe- cially sensitive to prepayment or interest rate risk or that have been structured to meet the investment  requirements  of  limited  catego- ries of investors. The residual securities may experience sig- nificant adverse tax timing consequences. Ac- cordingly,   you   are   urged   to   consult   tax advisors and to consider the after-tax effect of ownership of a residual security and the suit- ability of the residual securities to your in- vestment  objectives.  See  "Certain  Federal S-12